diff --git a/Empire.js b/Empire.js
index a408a34..b593bd2 100644
--- a/Empire.js
+++ b/Empire.js
@@ -82,6 +82,31 @@ module.exports = {
     },
     sellEnergy: function(roomname){
         let myorders = Game.market.getAllOrders(order=>order.resourceType == RESOURCE_ENERGY && order.type == ORDER_SELL)
-        
+    },
+    computeSourceAccess: function(){
+        for(let myroom of _.filter(Game.rooms, 'controller.my')) {
+            let name = myroom.name
+            let minablepositions = 0
+            let srcs = Game.rooms[name].find(FIND_SOURCES);
+            for(let i = 0;i<srcs.length;i++)
+            {
+                minablepositions = minablepositions + this.computeSourceAccessPoints(Game.rooms[name],srcs[i])
+                //minablepositions = minablepositions + this.checkminablepositions(srcs[i])
+            }
+            Game.rooms[name].memory.minablepositions = minablepositions
+        }
+    },
+    computeSourceAccessPoints: function(room, source){
+        const roomTerrain = room.getTerrain();
+        var accessPoints = 0;
+        for(var x = -1;x<=1;x++)
+        {
+            for(var y = -1;y<=1;y++)
+            {
+                if(x==0 && y==0){continue;}
+                if(roomTerrain.get(source.pos.x+x,source.pos.y+y)!=1){accessPoints++;}
+            }
+        }
+        return accessPoints;
     }
 };
\ No newline at end of file
diff --git a/RoomInit.js b/RoomInit.js
index 6672e0a..82f1e7b 100644
--- a/RoomInit.js
+++ b/RoomInit.js
@@ -10,22 +10,40 @@ let initroom = {
         Game.rooms[name].memory.tickssofar=0
         Game.rooms[name].memory.maphits={}
         //Game.rooms[name].memory.minablepositions= this.checkminablepositions(name)
+        let minablepositions = 0
+        let srcs = Game.rooms[name].find(FIND_SOURCES);
+        for(let i = 0;i<srcs.length;i++)
+        {
+            minablepositions = minablepositions + this.computeSourceAccessPoints(Game.rooms[name],srcs[i])
+            //minablepositions = minablepositions + this.checkminablepositions(srcs[i])
+        }
+        Game.rooms[name].memory.minablepositions = minablepositions
      },
+     computeSourceAccessPoints: function(room, source){
+        const roomTerrain = room.getTerrain();
+        var accessPoints = 0;
+        for(var x = -1;x<=1;x++)
+        {
+            for(var y = -1;y<=1;y++)
+            {
+                if(x==0 && y==0){continue;}
+                if(roomTerrain.get(source.pos.x+x,source.pos.y+y)!=1){accessPoints++;}
+            }
+        }
+        return accessPoints;
+    },
      checkminablepositions: function(name){
-          Source.prototype.analyzeFreeSpaces = function() {
-               let x = this.pos.x;
-               let y = this.pos.y;
-               let walkable = this.room.lookForAtArea(
-                   LOOK_TERRAIN,
-                   y - 1,  // top
-                   x - 1,  // left
-                   y + 1,  // bottom
-                   x + 1,  // right
-                   true    // asArray
-               ).filter(o => o[LOOK_TERRAIN] !== 'wall');
-               return walkable.length;
-           };
-           
+        let x = this.pos.x;
+        let y = this.pos.y;
+        let walkable = this.room.lookForAtArea(
+            LOOK_TERRAIN,
+            y - 1,  // top
+            x - 1,  // left
+            y + 1,  // bottom
+            x + 1,  // right
+            true    // asArray
+        ).filter(o => o[LOOK_TERRAIN] !== 'wall');
+        return walkable.length;
      }
 }
 module.exports = initroom
\ No newline at end of file
diff --git a/main.js b/main.js
index a079ac2..ed4d0d9 100644
--- a/main.js
+++ b/main.js
@@ -63,7 +63,7 @@ module.exports.loop = function () {
                 require('role.' + creep.memory.role).run(creep)
                 //creep.say("TRYING")
             }  catch (e) {
-                console.log("creep error")
+                console.log("creep error " + Game.creeps[name])
                 console.log(e)
             }
         }